Lee Young-nam (Bae Doona), a serious female police officer in Seoul, was "exiled" to a remote and secluded port town to serve as the chief of a police station for one year because of something. On the first day of arriving there, Young-nam met the timid and silent little girl Sun Do-hee (Kim Sae-ron). Do-hee is the only child adopted by Park Yong-ha, the only young man in the area, but Park and his mother often beat Do-hee, and the girl was bullied by her classmates during school. One night, Young-nam rescued Do-hee from the drunk Park Yong-ha, and since then Do-hee has become her little follower. One day later, Park's mother died in an accident, which allowed Do-hee to temporarily take refuge in Young-nam's home. Under Young-nam's care, the girl showed a long-lost smile on her face, but at that time an ambiguous atmosphere quietly rose, and Young-nam was forced to be involved in the whirlpool of fate...